US9722742B2 - Method and apparatus for implementing coordinated multiple point transmission - Google Patents

Method and apparatus for implementing coordinated multiple point transmission Download PDF

Info

Publication number
US9722742B2
US9722742B2 US13/265,661 US201013265661A US9722742B2 US 9722742 B2 US9722742 B2 US 9722742B2 US 201013265661 A US201013265661 A US 201013265661A US 9722742 B2 US9722742 B2 US 9722742B2
Authority
US
United States
Prior art keywords
cells
bit
setting
indication
subgroup
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active, expires
Application number
US13/265,661
Other languages
English (en)
Other versions
US20120039216A1 (en
Inventor
Yingyang Li
Xiaoqiang Li
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Samsung Electronics Co Ltd
Original Assignee
Samsung Electronics Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Assigned to SAMSUNG ELECTRONICS CO., LTD. reassignment SAMSUNG ELECTRONICS CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LI, XIAOQIANG, LI, YINGYANG
Publication of US20120039216A1 publication Critical patent/US20120039216A1/en
Application granted granted Critical
Publication of US9722742B2 publication Critical patent/US9722742B2/en
Active legal-status Critical Current
Adjusted expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/022—Site diversity; Macro-diversity
    • H04B7/024—Co-operative use of antennas of several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output [MIMO] systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point

Definitions

  • the present invention relates to the field of mobile communication, and particularly to a method and apparatus for implementing coordinated multiple point transmission.
  • CoMP coordinated multiple point transmission
  • UE user equipment
  • a set of cells measured by a UE i.e. measuring group is configured in the network to support operations such as radio resource management.
  • CoMP it is necessary for the network to determine which sending nodes sending signals to a UE.
  • two cell group concepts, associated with CoMP are defined.
  • CoMP UE To a UE working in the mode of CoMP (referred to as CoMP UE in general), a set of cells, to be measured and of which the channel information should be reported, are configured in the network.
  • the set of cells are referred to as report set.
  • report sets corresponding to the different UEs include the different cells.
  • the number of cells included in a reporting set determines the overhead of a UE sending an uplink signaling of channel feedback information. Since the number of cells included in the reporting set may be large, a CoMP UE may also select to only report the channel information of a part of cells in a reporting set.
  • the part of cells is regarded by the network as a set of cells for practically sending signals to a UE, which is referred to as cooperating set. It is easily understood that, to the same UE, its cooperating set may be the same as its reporting set, or a subset of its reporting set.
  • CRS CRS
  • CSI-RS reference signal
  • a design principle for CRS and CSI-RS requires the adjacent cells sending the CRS and CSI-RS at the different time-frequency resource, so that there is no interference among the CRS and CSI-RS sent by the adjacent cells.
  • the advantage brought by this design principle is that, the adjacent cells may respectively improve the transmit powers of their CRS and CSI-RS, so as to improve the precision of channel estimation and channel measurement.
  • the adjacent two cells need to configure the mapping patterns for sending the CRS and CSI-RS at the different time-frequency resource location (i.e. the adjacent two cells need to configure two different mapping patterns, wherein the mapping location of CRS and CSI-RS in a mapping pattern is not overlapped by that in the other mapping pattern); when a cell sends a CRS or CSI-RS at a resource element (RE), an adjacent cell sends data at the RE.
  • the adjacent two cells need to configure the mapping patterns for sending the CRS and CSI-RS at the different time-frequency resource location (i.e. the adjacent two cells need to configure two different mapping patterns, wherein the mapping location of CRS and CSI-RS in a mapping pattern is not overlapped by that in the other mapping pattern); when a cell sends a CRS or CSI-RS at a resource element (RE), an adjacent cell sends data at the RE.
  • RE resource element
  • CoMP JP it is required that, multiple sending nodes send data to a CoMP UE at the same time-frequency resource location; so that, when a cell sends data at a RE, it is required that other cells send data at the same RE by the CoMP technology.
  • the present invention provides a method and apparatus for implementing coordinated multiple point transmission CoMP, which is able to meet the design principle of CRS and CSI-RS and guarantee the normal application of CoMP at the same time.
  • a method for implementing coordinated multiple point transmission including: configuring, by the network side, a range setting group to a user equipment, UE, and acquiring the original mapping pattern of various cells in the group; the rang setting group is a measuring set, reporting set or cooperating set; receiving the channel information of various cells in the group returned by the UE; selecting, by the network side, cells for practically sending data to the UE currently, determining the update mapping patterns for the cells selected in the group performing the CoMP, and controlling the selected various cells to send a physical downlink shared channel to the UE according to the update mapping pattern.
  • An apparatus for implementing coordinated multiple point transmission including: original setting module for configuring a range setting group to a user equipment, UE, and acquiring the original mapping patterns of various cells in the group; the rang setting group is a measuring set, reporting set or cooperating set; channel information receiving module for receiving the channel information of various cells in the group returned by the UE; mapping pattern update transmit module for selecting cells for practically sending data to the UE currently, determining the update mapping patterns for the cells selected from the group performing the CoMP, and controlling the selected various cells to send a physical downlink shared channel to the UE according to the update mapping pattern.
  • the mapping patterns of the cells for practically sending data to a UE are updated by acquiring the CRS and CSI-RS mapping locations of the original mapping pattern of cells of the range setting group to get the update mapping pattern for use in the CoMP, so that it is possible to make the CRS and CSI-RS mapping locations of the cells for practically sending data to a UE are different and guarantee that various cells are able to perform the CoMP at the same RE location, thereby meeting the design principle of CRS and CSI-RS and the normal application of CoMP.
  • the mapping patterns of the cells for practically sending data to a UE are updated by acquiring the CRS and CSI-RS mapping locations of the original mapping pattern of cells of the range setting group to get the update mapping pattern for use in the CoMP JP, so that it is possible to make the CRS and CSI-RS mapping locations of the cells for practically sending data to a UE are different and guarantee that various cells are able to perform the CoMP JP at the same RE location, thereby meeting the design principle of CRS and CSI-RS and the normal application of CoMP JP.
  • the CSI-RS since it is possible to guarantee the time-frequency resource locations for various cells sending CSI-RS are different, so as to guarantee the interference is small when the signal is sent; since the signal is used for channel measurement after being received by a UE, it is possible to improve the precision for the UE measuring a cell having weak signals in accordance with embodiments of the present invention.
  • FIG. 1 is a flowchart of the method for implementing CoMP in accordance with embodiments of the present invention.
  • FIG. 2 is a structure schematic diagram of the apparatus for implementing CoMP in accordance with embodiment of the present invention.
  • FIG. 3 is a first structure schematic diagram of the mapping pattern update transmit module in accordance with embodiments of the present invention.
  • FIG. 4 is a second structure schematic diagram of the mapping pattern update transmit module in accordance with embodiments of the present invention.
  • FIG. 5 is a third structure schematic diagram of the mapping pattern update transmit module in accordance with embodiments of the present invention.
  • FIG. 6 is a forth structure schematic diagram of the mapping pattern update transmit module in accordance with embodiments of the present invention.
  • the core idea of the present invention is to further adjust the original mapping patterns of various cells during coordinated multiple point joint processing (CoMP JP), so as to guarantee that downlink data are mapped to the RE that can be used by various cells at the same time. So that it is possible to not only meet the design principle of CRS and CSI-RS but also guarantee the normal application of CoMP JP.
  • CoMP JP coordinated multiple point joint processing
  • a method for implementing CoMP JP is provided in an embodiment of the present invention.
  • the flowchart of the method as shown in FIG. 1 includes:
  • Step 101 the network side configures a range setting group to a UE, and acquires the original mapping patterns of various cells in the group;
  • the range setting group is a measuring set, reporting set or cooperating set;
  • the method for the network side configuring a range setting group to a UE and acquiring the original mapping patterns of various cells in the group includes:
  • the network side delivering cell IDs of various cells included in the range setting group to the UE, and acquiring the original mapping patterns of various cells according to the preset corresponding relation between the Cell ID and the original mapping pattern of cell.
  • all original mapping patterns are preset definitely in the standards.
  • these original mapping patterns correspond to various cells by a default corresponding relation, i.e. one cell corresponds to a determined original mapping pattern; the current used method in general is to establish a corresponding relation between the Cell ID of cell and the number of original mapping pattern; so that, for a determined cell, the number of original mapping pattern used by a cell may be computed according to the Cell ID of the cell.
  • the UE may acquire the original mapping pattern used by the cells by using the same algorithm as the network side. It is easily understood that, the forgoing method acquiring the original mapping pattern of a cell by the Cell ID of the cell is only an example compatible with the existing standards.
  • Step 102 receive the channel information of various cells in the group returned by the UE;
  • Step 103 the network side selects cells for practically sending data to the UE currently, and determines the update mapping patterns for the cells selected in the group performing the CoMP JP; the selected various cells send a physical downlink shared channel to the UE according to the update mapping pattern.
  • the method for the network side determining the mapping patterns for the selected various cells performing the CoMP JP is the core and key idea of the present invention, which is hereinafter described in detail with reference to embodiments.
  • the mapping locations of CRS and CSI-RS in its original mapping pattern are not always the same as those in the original mapping pattern of its adjacent cell B; when the mapping locations are different, the RE corresponding to the mapping locations of CRS and CSI-RS in the original mapping pattern of cell B is identified in the original mapping pattern of cell A and the RE corresponding to the mapping locations of CRS and CSI-RS in the original mapping pattern of cell A is identified in the original mapping pattern of cell B, and the data are not transmitted by using the identified location during CoMP JP, so that, the other residual locations in the original mapping patterns of cell A and cell B may guarantee that cell A and cell B may select any RE to perform the CoMP JP without the problem that cell A and cell B are impossible to transmit data at the RE.
  • the method for the network side determining the mapping patterns for the selected various cells performing the CoMP JP includes:
  • Identifying the RE corresponding to the mapping locations of CRS and CSI-RS in the original mapping pattern of all cells of the group as the time-frequency resource locations those can not be used in the CoMP JP in embodiment 1 is designed in the case that various cells of the group are all used for sending data to a UE. In a practical application, however, various cells of the group allocated in step 101 are not all selected to send data to a UE during the CoMP JP; only a part of cells are used for sending data to the UE at the same time and the selected cells at one time may be different.
  • the REs those can not be used in the CoMP JP, identified in the case that various cells of the group are all used for sending data to a UE will obviously greatly be greater than or equal to the RE to be identified practically, so as to cause a certain extent waste of network resource.
  • the present invention further provides a preferred embodiment; various cells oinf the group are classified in advance according to their original mapping patterns, the cells for practically sending data to a UE may be classified to one class or several classes during the CoMP JP; at this time, a first indication is set in the physical downlink control channel (PDCCH) sent by the network side to the serving cell, and the first indication is used for indicating which classes of cells are the cells for practically sending data to the UE; at the same time, the network side identifies the REs those can not be used for CoMP JP according to the practical used classes, and takes these REs as the time-frequency resource locations those are not allowed to be used during the CoMP JP, so that, it is possible to guarantee the normal application of CoMP JP.
  • PDCCH physical downlink control channel
  • the original mapping patterns are updated only according to the mapping locations of CRS and CSI-RS of the original mapping patterns of a part types of cells of the class, the number of REs, those can not be used for CoMP JP, identified by the method must be less than or equal to that got by the method of embodiment 1, so that embodiment 2 has a better resource utilization ratio than embodiment 1.
  • step 103 between the step for the network side selecting the cells for practically sending data to a UE and the step for determining the update mapping patterns for use in the selected various cells performing the CoMP JP, the method further includes the following steps.
  • the network side set a first indication in the PDCCH delivered to the serving cell; the first indication is used for identifying the subgroup to which various cells for current sending data practically to a UE belong; the subgroup is a class preset in the system according to the original mapping patterns of various cells.
  • the network side sets a first indication of six bits in the delivered PDCCH according to the cells for practically sending data to a UE; the first indication is used for indicating that the cells for practically sending data to a UE belong to which subgroup or several subgroups of the six subgroups, and updating the original mapping patterns of these cells according to the subgroup to which the cells for practically sending data to a UE belong.
  • the method for the network side setting a first indication in the PDCCH delivered to a serving cell includes the following steps.
  • the network side sets six subgroups according to the six types of CRS mapping patterns regulated in the system, sets a first indication of six bits of which each bit corresponds to a subgroup; for each bit, when there is a subgroup corresponding to the bit in the set composed of the cells for current sending data to a UE practically, the bit is set as valid state; otherwise, the bit is set as invalid state;
  • the first indication is added to the PDCCH delivered to the serving cell.
  • supposing that there are four cells for current sending data practically to a UE (C1, C2, C3 and C4), which respectively belong to two subgroups of the six subgroups (supposing that the six subgroups are respectively SG1, SG2, SG3, SG4, SG5 and SG6) (supposing that C1 and C2 belong to SG2 while C3 and C4 belong to SG4)
  • the UE is notified by a first indication in the delivered PDCCH that the cells for practically sending data to the UE belong to two subgroups of SG2 and SG4; at the same time, the network side updates the original mapping patterns of the four cells, which is explained by taking C1 for example.
  • the four cells, classified according to the CRS mapping pattern respectively belong to two subgroups of SG2 and SG4 and the CRS mapping locations of the original mapping patterns of the two subgroups are different, for C1, it is necessary to identify the RE corresponding to the CRS mapping location of SG4 in its original mapping pattern, and then it is necessary to identify the RE corresponding to the CSI-RS mapping locations of C2, C3 and C4 in its original mapping pattern; the identified RE is used as the time-frequency resource location that is not allowed to be used for CoMP JP.
  • C2, C3 or C4 uses a mapping patter the same as the update mapping pattern of C1 to practically send data, which may guarantee the normal application of CoMP JP.
  • the six CRS mapping patterns may further equal three effective mapping patterns, of which each mapping pattern includes two of the six CRS mapping patterns. Therefore, the cells of the group may be divided into three subgroups according to three effective CRS mapping pattern, and a first indication of three bits is set in the PDCCH to indicate the cells for practically sending data to a UE belong to which subgroup or which several subgroups.
  • the method for portioning three subgroups may further be used in the case that various numbers of common antenna ports are configured in the base station of network side and the number of common antenna ports of various base stations in the network may be different; i.e. the number of common antenna ports of various base station of network side may be two or four; alternatively, the number of common antenna ports of various base station of network side are all one; or, the number of common antenna ports of various base station of network side are any one of one, two or four.
  • the method for the network side setting a first indication in the PDCCH delivered to a serving cell includes the following steps.
  • the network side sets three subgroups according to the three effective CRS mapping patterns regulated in the system, sets a first indication of three bits of which each bit corresponds to a subgroup; for each bit, when there is a subgroup corresponding to the bit in the set composed of the cells for current sending data to a UE practically, the bit is set as valid state; otherwise, the bit is set as invalid state;
  • the first indication is added to the PDCCH delivered to the serving cell.
  • a first indication of three bits, e.g. b 0 b 1 b 2 is set in the PDCCH, each bit corresponds to one of the three subgroups, which is as shown in following table 1:
  • the network side identifies the RE corresponding to the CRS mapping location of the original mapping pattern of any cell of subgroup b 2 , identifies the RE corresponding to the CSI-RS mapping location of the original mapping pattern of any cell of subgroup b 2 , and takes the identified RE as the time-frequency location that is not allowed to used for CoMP JP;
  • the network side identifies the RE corresponding to the CRS mapping location of the original mapping pattern of any cell of subgroup b 0 and b 2 , identifies the RE corresponding to the CSI-RS mapping location of the original mapping pattern of any cell of subgroup b 0 and b 2 , and takes the identified RE as the time-frequency location that is not allowed to used for CoMP JP,
  • the subgroup to which the serving cell belongs is hereinafter referred to as subgroup b 0 , which is not described one by one any more; therefore, preferably, the bit corresponding to the subgroup including the serving cell may be further omitted, i.e. a first indication of two bits is used to respectively represent the other two effective subgroups.
  • the method for the network side setting a first indication in the PDCCH delivered to a serving cell includes the following steps.
  • the network side sets three subgroups according to the three effective CRS mapping patterns regulated in the system, sets a first indication of two bits, of which each bit corresponds to one of the other two subgroups apart from the subgroup to which the serving cell belongs; for each bit, when there is a subgroup corresponding to the bit in the set composed of the cells for current sending data to a UE practically, the bit is set as valid state; otherwise, the bit is set as invalid state;
  • the first indication is added to the PDCCH delivered to the serving cell.
  • a first indication of two bits e.g. b 1 b 2 is set in the PDCCH, and each bit corresponds to one of the other two subgroups apart from subgroup b 0 , which is as shown in following table 2:
  • the network side identifies the RE corresponding to the CRS mapping location of the original mapping pattern of any cell of subgroup b 0 and b 2 , identifies the RE corresponding to the CSI-RS mapping location of the original mapping pattern of any cell of subgroup b 0 and b 2 , and takes the identified RE as the time-frequency location that is not allowed to used for CoMP JP. It is obvious that, the update mapping pattern is completely the same as that when the b 0 b 1 b 2 is 101 in the foregoing description.
  • a first indication of one bit may be used to perform resource optimization configuration for some special mapping patterns of CoMP JP as required, for example,
  • a first indication of one bit is set in the PDCCH; when the first indication is valid, it represents that the cells for current sending data practically to a UE and the serving cell belong to the same subgroup b 0 ; at this time, the network side identifies the RE corresponding to the CRS mapping location of the original mapping pattern of any cell of subgroup b 0 , identifies the RE corresponding to the CSI-RS mapping location of the original mapping pattern of any cell of subgroup b 0 , and takes the identified RE as the time-frequency location that is not allowed to used for CoMP JP;
  • the network side identifies the RE corresponding to the CRS mapping location of the original mapping pattern of any cell of the group, identifies the RE corresponding to the CSI-RS mapping location of the original mapping pattern of any cell of the group, and takes the identified RE as the time-frequency location that is not allowed to used for CoMP JP.
  • the method for the network side setting a first indication in the PDCCH delivered to a serving cell includes the following steps.
  • the network side sets six subgroups according to the six types of CRS mapping patterns regulated in the system, or sets three subgroups according to the three effective CRS mapping patterns regulated in the system, sets a first indication of one bit; when the cells for current sending data practically to a UE and the serving cell belong to the same subgroup, the bit is set as valid state; otherwise, the bit is set as invalid state;
  • the first indication is added to the PDCCH delivered to the serving cell.
  • a first indication of one bit is set in the PDCCH; when the first indication is valid, it represents that the cells for current sending data practically to a UE are the set of all cells having the same original mapping pattern as the serving cell, which is hereinafter referred to as subgroup bsc; at this time, the network side identifies the RE corresponding to the CRS mapping location of the original mapping pattern of any cell of subgroup bsc, identifies the RE corresponding to the CSI-RS mapping location of the original mapping pattern of any cell of subgroup bsc, and takes the identified RE as the time-frequency location that is not allowed to used for CoMP JP;
  • the network side identifies the RE corresponding to the CRS mapping location of the original mapping pattern of any cell of the group, identifies the RE corresponding to the CSI-RS mapping location of the original mapping pattern of any cell of the group, and takes the identified RE as the time-frequency location that is not allowed to used for CoMP JP.
  • the method for the network side setting a first indication in the PDCCH delivered to a serving cell includes the following steps.
  • the network side sets six subgroups according to the six types of CRS mapping patterns regulated in the system, or sets three subgroups according to the three effective CRS mapping patterns regulated in the system, sets a first indication of one bit; when the cells for current sending data practically to a UE only include the serving cell, the bit is set as valid state; otherwise, the bit is set as invalid state;
  • the first indication is added to the PDCCH delivered to the serving cell.
  • Comparing embodiment 1 and 2 it is obviously that, the method for further grouping the cells for practically sending data to a UE of embodiment 2 has more reasonable resource configuration effect than the method of embodiment 1. Further, comparing A ⁇ D of embodiment 2, it is obvious that, the more the bit of the first indication used in the PDCCH is, the finer grouping the cells for practically sending data to a UE is, and the more reasonable the resource configuration of the cells for practically sending data to the UE during CoMP JP is; the less the bit of the first indication used in the PDCCH is, the coarser grouping the cells for practically sending data to a UE is, and the more unreasonable the resource configuration of the cells for practically sending data to the UE during CoMP JP is, so that it is possible to waste a certain extent RE resource.
  • the physical control format indication channels (PCFICH) of the cells for practically sending data to a UE are all set dynamically, so that the start OFDM symbol bit for transmitting data in the PDSCHs of various cells may be not completely identical.
  • the start OFDM symbol bit for transmitting data in cell A is start from the third OFDM symbol bit of subframe while the start OFDM symbol bit for transmitting data in cell B is start from the second OFDM symbol bit of subframe; in this case, the start OFDM symbol bit for transmitting data in cell B must be the same as that in cell A to guarantee the same data are sent at the same time-frequency resource location when cell A and B perform the CoMP JP; so that, the second OFDM symbol bit in cell B must be in an unused state, which causes a greatly waste of network resource.
  • the cells for practically sending data to a UE in the group are not always all cells of the group; sometimes the cells for practically sending data to a UE in the group may be one cell; at this time, the single cell sending data to the UE is a serving cell of the UE.
  • the start OFDM symbol bits for practically transmitting data of various cells are identical when various cells send data to a UE at the same time; when only the serving cell sends data to the UE, the data may be sent according to the original mapping pattern composed of the PCFICH, CRS and CSI-RS of the serving cell though there is no the problem that the original mapping patterns of various cells are different.
  • the embodiment of the present invention further includes the following steps.
  • the network side sets a second indication in the PDCCH delivered to a serving cell; the second indication is used for identifying whether the cells for practically sending data to a UE are only the serving cell.
  • the update mapping pattern of the serving cell is its original mapping pattern; afterwards, the serving cell may send data to the UE according to the original mapping pattern.
  • step 103 2) alternatively, preferably, in step 103 , between the step for the network side selecting the cells for practically sending data to a UE and the step for determining the update mapping patterns for use in the selected various cells performing the CoMP JP, the method further includes the following steps.
  • the network side sets a first indication and a second indication in the PDCCH delivered to the serving cell; the first indication is used for identifying the subgroup to which various cells for current sending data practically to a UE belong; the subgroup is a class preset in the system according to the original mapping patterns of various cells; the second indication is used for identifying whether the cells for practically sending data to a UE are only the serving cell.
  • the update mapping patterns for various cells performing the CoMP JP may be determined according to various methods provided by embodiment 2 and the CoMP JP is performed.
  • the first indication and the second indication may further be combined as one indication, which is hereinafter referred to as associated indication to avoid confusion.
  • the method for combining the first indication and the second indication belongs to the common technical means of those skills in the art, which is not limited in embodiments of the present invention; the spirit of the present invention is hereinafter described in detail by taking several implementing examples in embodiment 2 for example.
  • the network side sets three subgroups according to the three effective CRS mapping patterns regulated in the system, sets an associated indication of three bits; when the cells for current sending data practically to a UE only include the serving cell, each bit is set as invalid state; otherwise, sets that each bit corresponds to one subgroup; for each bit, when there is a subgroup corresponding to the bit in the set composed of the cells for current sending data to a UE practically, the bit is set as valid state; otherwise, the bit is set as invalid state.
  • table 1 By taking the indication of three bits used by table 1 for example, at this time, the indication of three bits is used as the associated indication, and correspondingly table 1 is modified as table 3.
  • the network side sets three subgroups according to the three effective CRS mapping patterns regulated in the system, sets an associated indication of two bits; when the cells for current sending data practically to a UE only include the serving cell, each bit is set as invalid state; otherwise, sets that each bit corresponds to one of the other two subgroups apart from the subgroup to which the serving cell belongs; for each bit, when there is a subgroup corresponding to the bit in the set composed of the cells for current sending data to a UE practically, the bit is set as valid state; otherwise, the bit is set as invalid state.
  • table 2 By taking the indication of two bits used by table 2 for example, at this time, the indication of two bits is used as the associated indication, and correspondingly table 2 is modified as table 4.
  • b 1 , b 2 of PDCCH The RE that can not used for CoMP combined transmission 0, 0 If the subgroup including the serving cell are only the serving cell, the data are sent according to the original mapping pattern composed of PCFICH, CRS and CSI-RS of the serving cell; Otherwise, the RE corresponding to the CRS mapping location of the original mapping pattern of any cell of subgroup b 0 is identified, and the RE corresponding to the CSI-RS mapping location of the original mapping pattern of any cell of subgroup b 0 is identified; the identified RE is used as the time-frequency location that is not allowed to used for CoMP JP.
  • the original mapping pattern of the serving cell is its practically-used update mapping patter; for the later case, the RE corresponding to the CRS mapping location of the original mapping pattern of any cell of subgroup b 0 is identified, and the RE corresponding to the CSI-RS mapping location of the original mapping pattern of any cell of subgroup b 0 is identified; the identified RE is used as the time-frequency location that is not allowed to used for CoMP JP.
  • the settings in table 4 are the same as those in table 2, which is not described in detail any more.
  • d1′ The indication of single bit adapted in d1 is used as the associated indication.
  • the network side sets six subgroups according to the six types of CRS mapping patterns regulated in the system, or sets three subgroups according to the three effective CRS mapping patterns regulated in the system, sets an associated indication of one bit; when the cells for current sending data practically to a UE only include the serving cell, the bit is set as invalid state; otherwise, when the cells for current sending data practically to a UE and the serving cell belong to the same subgroup, the bit is set as valid state; otherwise, the bit is set as invalid state.
  • the associated indication when the associated indication is valid, it presents two possible cases: one is the cells for current sending data practically to the UE are only the serving cell and the serving cell belongs to subgroup b 0 ; the other one is the cells for current sending data practically to the UE all belong to subgroup b 0 and the subgroup b 0 does not only include the serving cell.
  • the network side continues to send data by taking the original mapping pattern of the serving cell as its practically-used update mapping pattern; for the later case, the RE corresponding to the CRS mapping location of the original mapping pattern of any cell of subgroup b 0 is identified, and the RE corresponding to the CSI-RS mapping location of the original mapping pattern of any cell of subgroup b 0 is identified; the identified RE is used as the time-frequency location that is not allowed to used for CoMP JP.
  • the network side identifies the RE corresponding to the CRS mapping location of the original mapping pattern of any cell of the group, identifies the RE corresponding to the CSI-RS mapping location of the original mapping pattern of any cell of the group, and takes the identified RE as the time-frequency location that is not allowed to used for CoMP JP.
  • d2′ The indication of single bit adapted in d2 is used as the associated indication.
  • the network side sets six subgroups according to the six types of CRS mapping patterns regulated in the system, or sets three subgroups according to the three effective CRS mapping patterns regulated in the system, sets an associated indication of one bit; when the cells for current sending data practically to a UE only include the serving cell, the bit is set as valid state; otherwise, the bit is set as invalid state.
  • the associated indication when the associated indication is valid, it represents that the cells for current sending data practically to a UE only are the serving cell; when the associated indication is invalid, it represents that the cells for current sending data practically to a UE does not only include the serving cell.
  • the network side continues to send data by taking the original mapping pattern of the serving cell as its practically-used update mapping pattern; for the later case, according to the method of embodiment 1, the network side identifies the RE corresponding to the CRS mapping location of the original mapping pattern of any cell of the group, identifies the RE corresponding to the CSI-RS mapping location of the original mapping pattern of any cell of the group, and takes the identified RE as the time-frequency location that is not allowed to used for CoMP JP.
  • the mapping patterns of the cells for practically sending data to a UE are updated by acquiring the CRS and CSI-RS mapping locations of the original mapping pattern of cells of the range setting group to get the update mapping pattern for use in the CoMP JP, so that it is possible to make the CRS and CSI-RS mapping locations of the cells for practically sending data to a UE are different and guarantee that various cells are able to perform the CoMP JP at the same RE location, thereby meeting the design principle of CRS and CSI-RS and the normal application of CoMP JP at the same time.
  • the CSI-RS since it is possible to guarantee the time-frequency resource locations for various cells sending CSI-RS are different, so as to guarantee the interference is small when the signal is sent; since the signal is used for channel measurement after being received by a UE, it is possible to improve the precision for the UE measuring a cell having weak signals in accordance with embodiments of the present invention.
  • an apparatus for implementing CoMP JP is further provided in accordance with embodiments of the present invention; the structure of the apparatus is as shown in FIG. 2 ; the apparatus includes: an original setting module 210 , channel information receiving module 220 and mapping pattern update transmit module 230 ;
  • original setting module 210 is used for configuring a range setting group to a user equipment (UE), and acquiring the original mapping patterns of various cells in the group;
  • the rang setting group is a measuring set, reporting set or cooperating set;
  • channel information receiving module 220 is used for receiving the channel information of various cells in the group returned by the UE;
  • mapping pattern update transmit module 230 is used for selecting cells for practically sending data to the UE currently, determining the update mapping patterns for the cells selected from the group performing the CoMP JP, and controlling the selected various cells to send a physical downlink shared channel to the UE according to the update mapping pattern.
  • the original setting module 210 further includes:
  • the identification delivering unit 211 for delivering the cell identifications of various cells included by the range setting group to the UE;
  • the rang setting group is a measuring set, reporting set or cooperating set;
  • corresponding relation saving unit 212 for saving the preset corresponding relation between the cell identification and the original mapping pattern of cell, and providing the corresponding relation to original mapping pattern acquiring unit 213 ;
  • original mapping pattern acquiring unit 213 for acquiring the original mapping patterns of various cells according to the corresponding relations saved in corresponding relation saving unit 212 .
  • mapping pattern update transmit module Corresponding to the method for implementing CoMP JP in accordance with embodiments of the present invention, in the apparatus, there are many embodiments of the mapping pattern update transmit module, which will be hereinafter described respectively by taking several embodiments for example.
  • mapping pattern update transmit module 230 includes: a cell selecting unit 301 , pattern update unit 302 and transmit unit 303 ;
  • cell selecting unit 301 is used for selecting the cells for current sending data to a UE practically from the range setting group;
  • pattern update unit 302 is used for, for any one of various cells selected from the group, identifying the RE corresponding to the mapping locations of CRS and CSI-RS in the original mapping pattern of all cells of the group in the original mapping pattern of the cell, and acquiring the update mapping pattern used when the cell performs the CoMP JP by taking the identified RE as the time-frequency resource location that is not allowed to be used when the cell performs the CoMP JP;
  • transmit unit 303 is used for controlling the selected various cells to send a physical downlink shared channel to the UE according to the update mapping pattern.
  • mapping pattern update transmit module 230 includes: a cell selecting unit 410 , indication setting unit 420 , pattern update unit 430 and transmit unit 440 ;
  • cell selecting unit 410 is used for selecting the cells for current sending data to a UE practically from the range setting group;
  • indication setting unit 420 is used for setting an indication of one bit in the PDCCH delivered to a serving cell; when the cells for current sending data to a UE practically only includes the serving cell, the bit is set as valid state; otherwise, the bit is set as invalid state;
  • pattern update unit 430 is used for determining whether the cells for current sending data to a UE practically only include a serving cell; if the cells for current sending data to a UE practically only include the serving cell, the original mapping pattern of the serving cell is used as the update mapping pattern used when the serving cell performs the CoMP JP; otherwise, identifying the RE corresponding to the mapping locations of CRS and CSI-RS in the original mapping pattern of all cells of the group in the original mapping pattern of any one of the cells selected from the group, and acquiring the update mapping pattern used when the cell performs the CoMP JP by taking the identified RE as the time-frequency resource location that is not allowed to be used when the cell performs the CoMP JP;
  • transmit unit 440 is used for controlling the selected various cells to send a physical downlink shared channel to the UE according to the update mapping pattern.
  • mapping pattern update transmit module 230 includes: a cell selecting unit 510 , first indication setting unit 520 , pattern update unit 530 and transmit unit 540 ;
  • cell selecting unit 510 is used for selecting the cells for current sending data to a UE practically from the range setting group;
  • first indication setting unit 520 is used for setting a first indication in the PDCCH delivered to a serving cell; the first indication is used for identifying the subgroup to which various cells for current sending data practically to a UE belong; the subgroup is a class classified according to the CRS mapping patterns regulated by the system;
  • pattern update unit 530 is used for, for any one of various cells selected from the group, identifying the resource element (RE) corresponding to the CRS mapping locations included by every other existing subgroup in the original mapping pattern of the cell, identifying the RE corresponding to the CSI-RS mapping locations included by all existing subgroups in the original mapping pattern of the cell, and acquiring the update mapping pattern used when the cell performs the CoMP JP by taking the identified RE as the time-frequency resource location that is not allowed to be used when the cell performs the CoMP JP;
  • RE resource element
  • transmit unit 540 is used for controlling the selected various cells to send a physical downlink shared channel to the UE according to the update mapping pattern.
  • the first indication setting unit 520 includes:
  • subgroup setting subunit 521 for setting six subgroups according to the six types of CRS mapping patterns regulated in the system, and setting a first indication of six bits, of which each bit corresponds to one subgroup;
  • bit setting subunit 522 for each bit set by the subgroup setting subunit 521 , setting the bit as valid state when there is a subgroup corresponding to the bit in the set composed of the cells for current sending data to a UE practically; otherwise, setting the bit as invalid state;
  • indication adding subunit 523 for adding the first indication to the PDCCH delivered to the serving cell.
  • subgroup setting subunit 521 for setting three subgroups according to the three effective CRS mapping patterns regulated in the system, and setting a first indication of three bits, of which each bit corresponds to one subgroup;
  • bit setting subunit 522 for each bit set by the subgroup setting subunit 521 , setting the bit as valid state when there is a subgroup corresponding to the bit in the set composed of the cells for current sending data to a UE practically; otherwise, setting the bit as invalid state;
  • indication adding subunit 523 for adding the first indication to the PDCCH delivered to the serving cell.
  • subgroup setting subunit 521 for setting three subgroups according to the three effective CRS mapping patterns regulated in the system, and setting a first indication of two bits, of which each bit corresponds to one of the other two subgroups apart from the subgroup to which the serving cell belongs;
  • bit setting subunit 522 for each bit set by the subgroup setting subunit 521 , setting the bit as valid state when there is a subgroup corresponding to the bit in the set composed of the cells for current sending data to a UE practically; otherwise, setting the bit as invalid state;
  • indication adding subunit 523 for adding the first indication to the PDCCH delivered to the serving cell.
  • subgroup setting subunit 521 for setting six subgroups according to the six types of CRS mapping patterns regulated in the system, or setting three subgroups according to the three effective CRS mapping patterns regulated in the system, and setting a first indication of one bit;
  • bit setting subunit 522 for setting the bit as valid state when the cells for current sending data practically to a UE and the serving cell belong to the same subgroup;
  • indication adding subunit 523 for adding the first indication to the PDCCH delivered to the serving cell.
  • subgroup setting subunit 521 for setting six subgroups according to the six types of CRS mapping patterns regulated in the system, or setting three subgroups according to the three effective CRS mapping patterns regulated in the system, and setting a first indication of one bit;
  • bit setting subunit 522 for setting the bit as valid state when the cells for current sending data to a UE practically only include the serving cell; otherwise, setting the bit as invalid state;
  • indication adding subunit 523 for adding the first indication to the PDCCH delivered to the serving cell.
  • mapping pattern update transmit module 230 may further includes:
  • second indication setting unit 550 (as shown by the dotted line frame in FIG. 5 ) for setting a second indication of one bit in the PDCCH delivered to a serving cell; the second indication is used for identifying whether the cells for current sending data practically to a UE only are the serving cell.
  • the pattern update unit 530 is further used for determining whether the cells for current sending data to a UE practically only include a serving cell; if the cells for current sending data to a UE practically only include the serving cell, the original mapping pattern of the serving cell is used as the update mapping pattern used when the serving cell performs the CoMP JP; otherwise, for any one of the cells selected from the group, identifying the resource element (RE) corresponding to the CRS mapping locations included by every other existing subgroup in the original mapping pattern of the cell, identifying the RE corresponding to the CSI-RS mapping locations included by all existing subgroups in the original mapping pattern of the cell, and acquiring the update mapping pattern used when the cell performs the CoMP JP by taking the identified RE as the time-frequency resource location that is not allowed to be used when the cell performs the CoMP JP.
  • RE resource element
  • mapping pattern update transmit module 230 includes: a cell selecting unit 610 , associated indication setting unit 620 , pattern update unit 630 and transmit unit 640 ;
  • cell selecting unit 610 is used for selecting the cells for current sending data to a UE practically from the range setting group;
  • associated indication setting unit 620 is used for setting an associated indication in the PDCCH delivered to the serving cell; the associated indication is used for identifying the subgroup to which various cells for current sending data practically to a UE belong and identifying whether the cells for practically sending data to a UE are only the serving cell; the subgroup is a class preset in the system according to the original mapping patterns of various cells;
  • pattern update unit 630 is used for determining whether the cells for current sending data to a UE practically only include a serving cell; if the cells for current sending data to a UE practically only include the serving cell, the original mapping pattern of the serving cell is used as the update mapping pattern used when the serving cell performs the CoMP JP; otherwise, for any one of the cells selected from the group, identifying the resource element (RE) corresponding to the CRS mapping locations included by every other existing subgroup in the original mapping pattern of the cell, identifying the RE corresponding to the CSI-RS mapping locations included by all existing subgroups in the original mapping pattern of the cell, and acquiring the update mapping pattern used when the cell performs the CoMP JP by taking the identified RE as the time-frequency resource location that is not allowed to be used when the cell performs the CoMP JP.
  • RE resource element
  • transmit unit 640 is used for controlling the selected various cells to send a physical downlink shared channel to the UE according to the update mapping pattern.
  • the associated indication setting unit 620 includes:
  • subgroup setting subunit 621 for setting six subgroups according to the six types of CRS mapping patterns regulated in the system, and setting a first indication of six bits, of which each bit corresponds to one subgroup;
  • bit setting subunit 622 for setting each bit as invalid state when the cells for current sending data practically to a UE only include the serving cell; otherwise, for each bit, setting the bit as valid state when there is a subgroup corresponding to the bit in the set composed of the cells for current sending data to a UE practically; otherwise, setting the bit as invalid state;
  • indication adding subunit 623 for adding the associated indication to the PDCCH delivered to the serving cell.
  • subgroup setting subunit 621 for setting three subgroups according to the three effective CRS mapping patterns regulated in the system, and setting an associated indication of three bits, of which each bit corresponds to one subgroup;
  • bit setting subunit 622 for setting each bit as invalid state when the cells for current sending data practically to a UE only include the serving cell; otherwise, for each bit, setting the bit as valid state when there is a subgroup corresponding to the bit in the set composed of the cells for current sending data to a UE practically; otherwise, setting the bit as invalid state;
  • indication adding subunit 623 for adding the associated indication to the PDCCH delivered to the serving cell.
  • subgroup setting subunit 621 for setting three subgroups according to the three effective CRS mapping patterns regulated in the system, and setting an associated indication of two bits, of which each bit corresponds to one of the other two subgroups apart from the subgroup to which the serving cell belongs;
  • bit setting subunit 622 for setting each bit as invalid state when the cells for current sending data practically to a UE only include the serving cell; otherwise, for each bit, setting the bit as valid state when there is a subgroup corresponding to the bit in the set composed of the cells for current sending data to a UE practically; otherwise, setting the bit as invalid state;
  • indication adding subunit 623 for adding the associated indication to the PDCCH delivered to the serving cell.
  • subgroup setting subunit 621 for setting six subgroups according to the six types of CRS mapping patterns regulated in the system, or setting three subgroups according to the three effective CRS mapping patterns regulated in the system, and setting an associated indication of one bit;
  • bit setting subunit 622 for setting the bit as invalid state when the cells for current sending data practically to a UE only include the serving cell; otherwise, setting the bit as valid state when the cells for current sending data practically to a UE and the serving cell belong to the same subgroup; otherwise, setting the bit as invalid state;
  • indication adding subunit 623 for adding the associated indication to the PDCCH delivered to the serving cell.
  • subgroup setting subunit 621 for setting six subgroups according to the six types of CRS mapping patterns regulated in the system, or setting three subgroups according to the three effective CRS mapping patterns regulated in the system, and setting an associated indication of one bit;
  • bit setting subunit 622 for setting the bit as valid state when the cells for current sending data to a UE practically only include the serving cell; otherwise, setting the bit as invalid state;
  • indication adding subunit 623 for adding the associated indication to the PDCCH delivered to the serving cell.
  • the mapping patterns of the cells for practically sending data to a UE are updated by acquiring the CRS and CSI-RS mapping locations of the original mapping pattern of cells of the range setting group to get the update mapping pattern for use in the CoMP JP, so that it is possible to make the CRS and CSI-RS mapping locations of the cells for practically sending data to a UE are different and guarantee that various cells are able to perform the CoMP JP at the same RE location, thereby meeting the design principle of CRS and CSI-RS and the normal application of CoMP JP.
  • the CSI-RS since it is possible to guarantee the time-frequency resource locations for various cells sending CSI-RS are different, so as to guarantee the interference is small when the signal is sent; since the signal is used for channel measurement after being received by a UE, it is possible to improve the precision for the UE measuring a cell having weak signals in accordance with embodiments of the present invention.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)
US13/265,661 2009-04-24 2010-04-21 Method and apparatus for implementing coordinated multiple point transmission Active 2031-12-30 US9722742B2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
CN200910137077 2009-04-24
CN200910137077A CN101873629A (zh) 2009-04-24 2009-04-24 一种多点联合传输的方法和装置
CN200910137077.2 2009-04-24
PCT/KR2010/002489 WO2010123270A2 (fr) 2009-04-24 2010-04-21 Procédé et appareil pour mettre en oeuvre une transmission par points multiples coordonnés

Publications (2)

Publication Number Publication Date
US20120039216A1 US20120039216A1 (en) 2012-02-16
US9722742B2 true US9722742B2 (en) 2017-08-01

Family

ID=42998238

Family Applications (1)

Application Number Title Priority Date Filing Date
US13/265,661 Active 2031-12-30 US9722742B2 (en) 2009-04-24 2010-04-21 Method and apparatus for implementing coordinated multiple point transmission

Country Status (5)

Country Link
US (1) US9722742B2 (fr)
EP (1) EP2422470B1 (fr)
KR (1) KR20120018120A (fr)
CN (1) CN101873629A (fr)
WO (1) WO2010123270A2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10784940B2 (en) * 2016-12-02 2020-09-22 Huizhou Tcl Mobile Communication Co., Ltd. 5G platform-oriented node discovery method and system, and electronic device

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102480342A (zh) * 2010-11-25 2012-05-30 普天信息技术研究院有限公司 一种传输参考信号的方法和系统
KR101472100B1 (ko) 2010-12-22 2014-12-11 주식회사 케이티 무선통신 시스템에서 기지국 장비 및 데이터 처리 방법
US10200166B2 (en) * 2011-01-17 2019-02-05 Qualcomm Incorporated Rate matching for coordinated multipoint transmission schemes
US11575478B2 (en) 2011-01-17 2023-02-07 Qualcomm Incorporated Rate matching for coordinated multipoint transmission schemes
WO2012108807A1 (fr) * 2011-02-09 2012-08-16 Telefonaktiebolaget L M Ericsson (Publ) Configuration des symboles de ressources dépendants des points dans une cellule radio
US10187859B2 (en) * 2011-02-14 2019-01-22 Qualcomm Incorporated Power control and user multiplexing for heterogeneous network coordinated multipoint operations
KR101830738B1 (ko) * 2011-02-22 2018-04-04 엘지전자 주식회사 무선 통신 시스템에서 단말의 상향링크 송신 전력 제어 방법 및 이를 위한 장치
CN102761398B (zh) * 2011-04-27 2017-04-12 华为技术有限公司 控制信道与参考信号发射与接收方法、基站及用户设备
US8792924B2 (en) * 2011-05-06 2014-07-29 Futurewei Technologies, Inc. System and method for multi-cell access
CN103650368B (zh) * 2011-06-29 2017-09-29 Lg电子株式会社 信道状态信息发射方法和用户设备以及信道状态信息接收方法和基站
WO2013012264A2 (fr) * 2011-07-19 2013-01-24 엘지전자 주식회사 Procédé de communication utilisant de multiples points de transmission et appareil pour ce procédé
US9491652B2 (en) 2011-07-28 2016-11-08 Lg Electronics Inc. Method and apparatus for reporting a measurement in a wireless communication system
KR101311512B1 (ko) 2011-08-09 2013-09-25 주식회사 케이티 상향 링크 신호 처리 방법, 하향 링크 신호 처리 방법 및 이를 수행하는 무선 유닛
CN102932112B (zh) 2011-08-11 2015-11-25 华为技术有限公司 一种多天线传输的方法及装置
KR101289879B1 (ko) * 2011-08-16 2013-07-24 주식회사 케이티 디지털 신호 처리 장치, 신호 처리 시스템 및 신호 처리 방법
CN103023604A (zh) * 2011-09-21 2013-04-03 中兴通讯股份有限公司 预编码码字的获得方法及终端
CN103036640B (zh) * 2011-09-30 2017-11-14 中兴通讯股份有限公司 一种数据资源映射位置的处理方法和装置
US9838089B2 (en) * 2011-10-07 2017-12-05 Futurewei Technologies, Inc. System and method for multiple point transmission in a communications system
US20130088960A1 (en) 2011-10-07 2013-04-11 Futurewei Technologies, Inc. System and Method for Information Delivery with Multiple Point Transmission
KR101311523B1 (ko) 2011-10-26 2013-09-25 주식회사 케이티 이종 망 간의 망 부하 분산 방법
KR101311524B1 (ko) 2011-10-27 2013-09-25 주식회사 케이티 이종 망의 경계 주변에 위치하는 단말의 망 천이 방법
KR101620248B1 (ko) * 2011-11-04 2016-05-12 인텔 코포레이션 협력 멀티포인트(ｃｏｍｐ) 시스템들에서의 다운링크(ｄｌ) 전송들을 위한 타이밍 동기화
GB2496198B (en) 2011-11-07 2014-03-19 Broadcom Corp Apparatus, methods and computer programs for coordinated multipoint transmission
WO2013069345A1 (fr) * 2011-11-07 2013-05-16 株式会社エヌ・ティ・ティ・ドコモ Système de communication sans fil, station de base, équipement mobile et procédé de mesure de brouillage
KR101262340B1 (ko) 2011-11-30 2013-05-08 주식회사 케이티 시스템 정보 제공 장치 및 그 방법
US8902842B1 (en) * 2012-01-11 2014-12-02 Marvell International Ltd Control signaling and resource mapping for coordinated transmission
CN103259583B (zh) * 2012-02-20 2016-12-07 华为技术有限公司 传输数据的方法、用户设备和基站
KR20130104174A (ko) 2012-03-13 2013-09-25 삼성전자주식회사 이동통신 시스템에서 클러스터 사이 협력 통신을 위한 방법 및 장치
US20150049702A1 (en) * 2012-03-22 2015-02-19 Alcatel Lucent Channel state information feedbacks for coordinated multipoint transmissions
US9537639B2 (en) * 2012-05-11 2017-01-03 Lg Electronics Inc. Method and apparatus for transmitting channel state information in wireless communication system
CN103428758B (zh) * 2012-05-14 2018-08-21 中兴通讯股份有限公司 一种测量管理方法和网络端、测量方法和用户设备
CN103581997B (zh) * 2012-07-20 2017-07-28 华为技术有限公司 移动性管理的方法和设备
US20140029458A1 (en) * 2012-07-24 2014-01-30 Acer Incorporated Apparatuses and methods for signaling coordinated multi-point (comp) measurement configuration
CN103298132B (zh) * 2013-05-08 2016-03-02 东南大学 基于多点协作的发送点选择方法
CN104349378B (zh) * 2013-07-26 2019-06-14 中兴通讯股份有限公司 发现信号测量的方法、基站及终端
US9398566B2 (en) * 2014-09-18 2016-07-19 Nokia Technologies Oy Inter-operator radio resource sharing in dense deployments of small cell networks
CN107733616A (zh) * 2016-08-12 2018-02-23 中兴通讯股份有限公司 一种业务处理方法及装置
BR112020004529A2 (pt) 2017-09-07 2020-09-08 Guangdong Oppo Mobile Telecommunications Corp., Ltd. método de relatório de sinal, dispositivo terminal e dispositivo de rede

Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060111110A1 (en) 2002-10-23 2006-05-25 Uwe Schwarz Radio resource control method in mobile communication system, and mobile communication system
CN101373999A (zh) 2008-08-12 2009-02-25 中兴通讯股份有限公司 一种用于下行协作多点传输的导频传输方法
US20090238064A1 (en) * 2008-03-17 2009-09-24 Jung Hoon Lee Method of transmitting reference signal and transmitter using the same
US20100033374A1 (en) * 2008-08-08 2010-02-11 Futurewei Technologies, Inc. System and Method for Synchronized and Coordinated Beam Switching and Scheduling in a Wireless Communications System
US20100056215A1 (en) 2008-08-28 2010-03-04 Qualcomm Incorporated DISTRIBUTED DOWNLINK COORDINATED MULTI-POINT (CoMP) FRAMEWORK
WO2010025148A1 (fr) 2008-08-28 2010-03-04 Ntt Docomo, Inc. Approche intercellulaire de la mise en oeuvre d'une formation de faisceau cellulaire et d'une sélection/programmation utilisateur dans des environnements multicellulaires fondés sur une signalisation limitée entre des regroupements de sous-ensembles cellulaires
US20100091893A1 (en) * 2008-10-10 2010-04-15 Qualcomm Incorporated Method and apparatus for channel feedback in a wireless communication system
US20100189038A1 (en) * 2009-01-23 2010-07-29 Runhua Chen Circuit and method for mapping data symbols and reference signals for coordinated multi-point systems
US20100232336A1 (en) * 2009-03-13 2010-09-16 Sharp Laboratories Of America, Inc. Systems and methods for selecting antennas for coordinated multipoint transmission
US20100238821A1 (en) 2009-03-17 2010-09-23 Samsung Electronics Co., Ltd. SYSTEM AND METHOD FOR DYNAMIC CELL SELECTION AND RESOURCE MAPPING FOR CoMP JOINT TRANSMISSION
US20110183669A1 (en) * 2008-09-30 2011-07-28 Muhammad Kazmi Methods and Arrangments for Dynamically Adjusting the Rate of Sub Cell Searching in Coordinated Multiple Point Transmission/Reception, Comp, Cells
US20110199986A1 (en) * 2010-02-12 2011-08-18 Mo-Han Fong Reference signal for a coordinated multi-point network implementation
US20110237270A1 (en) * 2008-12-02 2011-09-29 Yu Jin Noh Method for transmitting reference signals in a downlink multiple input multiple output system
US20110317641A1 (en) * 2009-03-18 2011-12-29 Min Seok Noh Method and apparatus for transmitting reference signal in wireless communication system
US20120115497A1 (en) * 2009-03-19 2012-05-10 Toelli Antti Interference Avoidance in Mobile Communication Network Employing Distributed Antenna System

Patent Citations (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060111110A1 (en) 2002-10-23 2006-05-25 Uwe Schwarz Radio resource control method in mobile communication system, and mobile communication system
US20090238064A1 (en) * 2008-03-17 2009-09-24 Jung Hoon Lee Method of transmitting reference signal and transmitter using the same
US20100033374A1 (en) * 2008-08-08 2010-02-11 Futurewei Technologies, Inc. System and Method for Synchronized and Coordinated Beam Switching and Scheduling in a Wireless Communications System
CN101373999A (zh) 2008-08-12 2009-02-25 中兴通讯股份有限公司 一种用于下行协作多点传输的导频传输方法
US20100056215A1 (en) 2008-08-28 2010-03-04 Qualcomm Incorporated DISTRIBUTED DOWNLINK COORDINATED MULTI-POINT (CoMP) FRAMEWORK
WO2010025148A1 (fr) 2008-08-28 2010-03-04 Ntt Docomo, Inc. Approche intercellulaire de la mise en oeuvre d'une formation de faisceau cellulaire et d'une sélection/programmation utilisateur dans des environnements multicellulaires fondés sur une signalisation limitée entre des regroupements de sous-ensembles cellulaires
US20110183669A1 (en) * 2008-09-30 2011-07-28 Muhammad Kazmi Methods and Arrangments for Dynamically Adjusting the Rate of Sub Cell Searching in Coordinated Multiple Point Transmission/Reception, Comp, Cells
US20100091893A1 (en) * 2008-10-10 2010-04-15 Qualcomm Incorporated Method and apparatus for channel feedback in a wireless communication system
US20110237270A1 (en) * 2008-12-02 2011-09-29 Yu Jin Noh Method for transmitting reference signals in a downlink multiple input multiple output system
US20100189038A1 (en) * 2009-01-23 2010-07-29 Runhua Chen Circuit and method for mapping data symbols and reference signals for coordinated multi-point systems
US20100232336A1 (en) * 2009-03-13 2010-09-16 Sharp Laboratories Of America, Inc. Systems and methods for selecting antennas for coordinated multipoint transmission
US20100238821A1 (en) 2009-03-17 2010-09-23 Samsung Electronics Co., Ltd. SYSTEM AND METHOD FOR DYNAMIC CELL SELECTION AND RESOURCE MAPPING FOR CoMP JOINT TRANSMISSION
US20110317641A1 (en) * 2009-03-18 2011-12-29 Min Seok Noh Method and apparatus for transmitting reference signal in wireless communication system
US20120115497A1 (en) * 2009-03-19 2012-05-10 Toelli Antti Interference Avoidance in Mobile Communication Network Employing Distributed Antenna System
US20110199986A1 (en) * 2010-02-12 2011-08-18 Mo-Han Fong Reference signal for a coordinated multi-point network implementation

Non-Patent Citations (11)

* Cited by examiner, † Cited by third party
Title
"3rd Generation Partnership Project; Technical Specification Group Radio Access NetWork; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation (Release 8)", 3GPP Standard; 3GPP TS 36.211, 3rd Generation Partmership Project (3GPP), No. V8.6.0, Mar. 1, 2009 (Mar. 1, 2009) pp. 1-83, XP050377538.
"3rd Generation Partnership Project; Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA); Physical Channels and Modulation (Release 8)", 3GPP STANDARD; 3GPP TS 36.211, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, no. V8.6.0, 3GPP TS , 1 March 2009 (2009-03-01), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, pages 1 - 83, XP050377538
3GPP TSG-RAN WG1 #56bis, R1-091450, "RS Structure in Support of Higher-order MIMO", Mar. 23-27, 2009, pp. 1-10. *
A. Papadogiannis et al., A Dynamic Clustering Approach in Wireless Networks with Multi-Cell Cooperative Processing, ICC 2008, Beijing, May 19-23, 2008, pp. 4033-4037.
Fujitsu: "Efficient HARQ Protocol for SIC based DL COMP", 3GPP Draft; R1-091496, 3rd Generation Partnership Project (3GPP) , vol. RAN WG1, No. Seoul , Korea; Mar. 23, 2009, Mar. 18, 2009 (Mar. 18, 2009) , XP050417734 , [retrieved on Mar. 18, 2009].
FUJITSU: "Efficient HARQ Protocol for SIC based DL CoMP", 3GPP DRAFT; R1-091496, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Seoul, Korea; 20090323, R1-09149, 18 March 2009 (2009-03-18), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP050417734
Huawei et al., Solutions for DL CoMP Transmission-For Issues on Control Zone, CRS and DRS, 3GPP Draft, R1-090821, Feb. 5, 2009.
SAMSUNG: "Design Considerations for COMP Joint Transmission", 3GPP DRAFT; R1-091232 DESIGN CONSIDERATIONS FOR COMP JOINT TRANSMISSION, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, no. Seoul, Korea; 20090318, R1-09123, 18 March 2009 (2009-03-18), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP050338846
Samsung: :Design Considerations for COMP Joint Transmission, 3GPP Draft; R1-091232 Design Considerations for COMP Joint Transmission, 3rd Generation Partnership Project(3GPP), No. Seoul, Korea; Mar. 18, 2009, Mar. 18, 2009, XP050338846, [Retrived on Mar. 18, 2009].
TEXAS INSTRUMENTS: "Multiplexing and Signaling Support for Downlink COMP", 3GPP DRAFT; R1-091292 TI DL COMP, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, no. Seoul, Korea; 20090318, R1-09129, 18 March 2009 (2009-03-18), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP050338899
Texas Instruments: Multiplexing and Signaling Support for Downlink COMP, 3GPP Draft; R1-091292 TI DL COMP, 3rd Generation Partnership Project (3GPP) , No. Seoul , Korea; Mar. 18, 2009, Mar. 18, 2009 (Mar. 18, 2009) , XP050338899 , [retrieved on Mar. 18, 2009].

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10784940B2 (en) * 2016-12-02 2020-09-22 Huizhou Tcl Mobile Communication Co., Ltd. 5G platform-oriented node discovery method and system, and electronic device

Also Published As

Publication number Publication date
EP2422470B1 (fr) 2020-09-09
US20120039216A1 (en) 2012-02-16
WO2010123270A3 (fr) 2011-02-03
CN101873629A (zh) 2010-10-27
WO2010123270A2 (fr) 2010-10-28
EP2422470A4 (fr) 2016-12-28
EP2422470A2 (fr) 2012-02-29
KR20120018120A (ko) 2012-02-29

Similar Documents

Publication Publication Date Title
US9722742B2 (en) Method and apparatus for implementing coordinated multiple point transmission
US10951381B2 (en) CSI reference resource definition for CSI report in NR
US9935746B2 (en) Methods providing benefit metrics for inter base station coordinated multipoint communications and related base stations
US9398481B2 (en) Measurement method, CSI-RS resource sharing method and apparatus
EP2472940B1 (fr) Procédé et appareil pour effectuer une mesure de canal pour cellule
US9735941B2 (en) Interference measurement indication method, interference measurement method, related device, and communication system
JP6068653B2 (ja) ｅＰＤＣＣＨを通信するための、無線ネットワークにおける方法、ネットワークノード、及びユーザ端末
US20190116009A1 (en) Method and apparatus for receiving or transmitting downlink signal in wireless communication system
EP2922341B1 (fr) Procédé d'attribution de porteuses, équipement utilisateur et station de base
US20200220678A1 (en) Reference signal transmission and reception method and apparatus for beam management
CN105706484A (zh) 针对具有动态ul/dl的lte tdd的用于配置、测量和报告信道状态信息的方法和装置
KR20150110461A (ko) Enodeb간 comp를 지원하는 방법들
US10390344B2 (en) Carrier configuration method, base station, and user equipment
US20200028718A1 (en) Reference signal transmission method, channel measurement method, radio base station and user terminal
CN111901838B (zh) 一种信令接收、发送方法及设备
US20190246404A1 (en) Method and apparatus for configuring wireless resource allocation information
WO2016173489A1 (fr) Procédé d'envoi et procédé de réception d'informations de commande, émetteur et récepteur
TW201322805A (zh) 天線系統及其中接收功率的報告方法
US9419691B2 (en) Data transmission method and apparatus
JP2020529802A (ja) ビーム情報を指示および決定するための方法および装置、ならびに通信システム
KR20230164743A (ko) 자원 구성 향상을 위한 시스템 및 방법
CN109842436B (zh) 一种上行信号传输方法、终端和网络侧设备
KR102398426B1 (ko) 다중 셀 협력 통신 시스템에서 제어 정보를 전송하는 방법 및 장치
US11451988B2 (en) Methods and apparatus for assignment of radio resources in a wireless network
CN117560745A (zh) 一种通信传输处理方法、装置及通信设备

Legal Events

Date Code Title Description
AS Assignment

Owner name: SAMSUNG ELECTRONICS CO., LTD., KOREA, REPUBLIC OF

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:LI, YINGYANG;LI, XIAOQIANG;SIGNING DATES FROM 20111010 TO 20111013;REEL/FRAME:027100/0228

STCF Information on status: patent grant

Free format text: PATENTED CASE

MAFP Maintenance fee payment

Free format text: PAYMENT OF MAINTENANCE FEE, 4TH YEAR, LARGE ENTITY (ORIGINAL EVENT CODE: M1551); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

Year of fee payment: 4